Poster of Cast and Crew in The Undersea World Of Jacques Cousteau - Season 1 - Episode 20 - A sound of dolphins

The Undersea World Of Jacques Cousteau - Season 1 - A sound of dolphins (Episode 20)

Plot: The crew isolates a pair of dolphins to study the species' remarkable sonar system.
Episode Aired On:
Friday, February 25 1972
52 years ago